EX-22 4 ex22-1.txt EXHIBIT 21.1 Exhibit 22.1 Subsidiaries of Circuit Research Labs, Inc. Jurisdiciton of Name of Subsidiary Incorporation ------------------------------- ------------- CRL Systems, Inc. (1) Nevada CRL International, Inc. (2) Guam Each subsidiary is wholly-owned by Circuit Research Labs, Inc. 1. CRL Systems, Inc. does business under the names Orban and CRL Systems. 2. CRL International, Inc. does business under its corporate name.